Add --ignore-platform-reqs due to ig_ldap_sso_auth extension

.ddev/config.yaml

-APIVersion: v1.4.1
+APIVersion: v1.5.0
 name: typo3.org
 type: typo3
-docroot: html
-php_version: "7.0"
+docroot: public
+php_version: "7.2"
 webserver_type: nginx-fpm
-dbimage: drud/ddev-dbserver:v1.2.0
 router_http_port: "80"
 router_https_port: "443"
 xdebug_enabled: false
 additional_hostnames: []
 additional_fqdns: []
+mariadb_version: "10.1"
+webcache_enabled: false
 provider: default
 hooks:
   post-start:
-  - exec: cp html/typo3conf/AdditionalConfiguration.ddev.php html/typo3conf/AdditionalConfiguration.php
-  - exec: composer install -d /var/www/html
-  - exec: npm --prefix html/typo3conf/ext/t3olayout/Build install
-  - exec: npm --prefix html/typo3conf/ext/t3olayout/Build run-script build
+  - exec: cp private/typo3conf/AdditionalConfiguration.ddev.php private/typo3conf/AdditionalConfiguration.php
+  - exec: composer install --ignore-platform-reqs -d /var/www/html
+  - exec: npm --prefix private/typo3conf/ext/t3olayout/Build install
+  - exec: npm --prefix private/typo3conf/ext/t3olayout/Build run-script build
   - exec: ./vendor/bin/typo3cms install:generatepackagestates
   - exec: ./vendor/bin/typo3cms install:extensionsetupifpossible
-  - exec: ./vendor/bin/typo3cms extension:activate redirects
 
 
-# This config.yaml was created with ddev version v1.4.1 
-# webimage: drud/ddev-webserver:v1.4.0
-# dbimage: drud/ddev-dbserver:v1.4.0
-# dbaimage: drud/phpmyadmin:v1.4.0
+# This config.yaml was created with ddev version v1.5.0
+# webimage: drud/ddev-webserver:v1.5.0
+# dbimage: drud/ddev-dbserver:v1.5.0-10.2
+# dbaimage: drud/phpmyadmin:v1.5.0
+# bgsyncimage: drud/ddev-bgsync:v1.5.0
 # However we do not recommend explicitly wiring these images into the
 # config.yaml as they may break future versions of ddev.
 # You can update this config.yaml using 'ddev config'.
@@ -39,7 +40,7 @@ hooks:
 
 # docroot: <relative_path> # Relative path to the directory containing index.php.
 
-# php_version: "7.1"  # PHP version to use, "5.6", "7.0", "7.1", "7.2"
+# php_version: "7.1"  # PHP version to use, "5.6", "7.0", "7.1", "7.2", "7.3"
 
 # You can explicitly specify the webimage, dbimage, dbaimage lines but this
 # is not recommended, as the images are often closely tied to ddev's' behavior,
@@ -48,6 +49,7 @@ hooks:
 # webimage: <docker_image>  # nginx/php docker image.
 # dbimage: <docker_image>  # mariadb docker image.
 # dbaimage: <docker_image>
+# bgsyncimage: <docker_image>
 
 # router_http_port: <port>  # Port to be used for http (defaults to port 80)
 # router_https_port: <port> # Port for https (defaults to 443)
@@ -74,13 +76,15 @@ hooks:
 # working_dir:
 #   web: /var/www/html
 #   db: /home
-# would set the default working directory for the web and db services. 
-# These values specify the destination directory for ddev ssh and the 
-# directory in which commands passed into ddev exec are run. 
+# would set the default working directory for the web and db services.
+# These values specify the destination directory for ddev ssh and the
+# directory in which commands passed into ddev exec are run.
 
 # omit_containers: ["dba", "ddev-ssh-agent"]
 # would omit the dba (phpMyAdmin) and ddev-ssh-agent containers. Currently
 # only those two containers can be omitted here.
+# Note that these containers can also be omitted globally in the
+# ~/.ddev/global_config.yaml or with the "ddev config global" command.
 
 
 # provider: default # Currently either "default" or "pantheon"
@@ -92,4 +96,4 @@ hooks:
 # for them. Example:
 #hooks:
 #  post-start:
-#    - exec: composer install -d /var/www/html
\ No newline at end of file
+#    - exec: composer install -d /var/www/html

.gitignore

 .idea
-vendor
-private
-!private/typo3conf/LocalConfiguration.php
-!private/typo3conf/AdditionalConfiguration.ddev.php
-!private/typo3conf/RealurlConfiguration.php
-public
-public/services/api-keys.php
-!public/humans.txt
-!public/robots.txt
-!public/services
+/vendor
+/private
+!/private/typo3conf/LocalConfiguration.php
+!/private/typo3conf/AdditionalConfiguration.ddev.php
+!/private/typo3conf/RealurlConfiguration.php
+/public/
+/public/services/api-keys.php
+!/public/humans.txt
+!/public/robots.txt
+!/public/services
 /auth.json
 /assets/
 sequelpro.spf